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Anti-Nuclear Antibody Screening Using HEp-2 Cells
Published on: June 24, 2014
[Biological and evolutive spectrum of patients ANCA present]
A Covic1, Camelia Mutică, Anamaria Ignat
1Universitatea de Medicină şi Farmacie Gr.T. Popa Iaşi, Facultatea de Medicină, Clinica a IV-a Medicală-Nefrologie.
Insights
Antineutrophil cytoplasmic antibodies (ANCA) are linked to kidney disease and inflammation. Testing for ANCA, particularly cANCA, may indicate a poorer prognosis in vasculitis patients.
Area of Science:
- Nephrology
- Immunology
- Internal Medicine
Context:
- Retrospective analysis of 97 patients with antineutrophil cytoplasmic antibodies (ANCA) from a Nephrology clinic (1998-2003).
- Investigating the immuno-biological profile associated with ANCA positivity.
Purpose:
- To analyze the immuno-biological profile of patients presenting with ANCA.
- To determine the association between ANCA subtypes (pANCA, cANCA) and specific renal diseases.
Summary:
- pANCA and cANCA were detected in 28 and 60 patients, respectively.
- ANCA-associated diseases included systemic vasculitis, rapidly progressive glomerulonephritis (GNRP), and chronic renal failure.
- ANCA positivity correlated with inflammatory (83.5%) and anemic (71.1%) syndromes.
- Renal dysfunction was present in 71.1% of patients, with elevated creatinine in half.
- Crescentic glomerulonephritis was a common finding on renal biopsy.
- cANCA cases exhibited more frequent complications and disease severity.
Impact:
- cANCA presence is identified as a negative prognostic factor in vasculitis.
- Highlights the importance of ANCA testing in diagnosing and understanding the prognosis of renal diseases.
- Emphasizes that ANCA testing alone is insufficient for guiding treatment decisions.
Aim:
To analyse the immuno-biological profile of patients with antineutrophil cytoplasmic antibodies (ANCA) presents. This is a retrospective study of all ANCA positives cases from Nephrology Clinic Iasi during five years (1998-2003) on a cohort of 97 patients.
Results:
pANCA was positive in 28, cANCA was positive in 60 and the others had pANCA and cANCA. The diseases ANCA associated were: systemic vasculitis, rapidly progressive glomerulonephritis (GNRP), chronic renal failure of an unknown etiology. ANCA presence was associated with inflammatory syndrome in 83.5%, anemic syndrome in 71.1%. From the patients with renal disfunction (71.1%), half of them presented an increased level of creatinine (>6 mg%). Renal biopsy proven especially crescentic glomerulonephritis. The complications and the diseases were more frequent in cANCA cases.
Conclusions:
cANCA presence is a negative prognosis factor in vasculitis; testing ANCA alone cannot be used to guide treatment.
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